Light directing device



Jan. 16, 1940. R. T. ZWACK LIGHT DIRECTING DEVICE Filed March 10, 1958 INVENTOR. Reg/mono] 7. Zwac/r BY w A RNH w Patented Jan. 16, 1940 UNITED STATES PATENT OFFICE LIGHT DIRECTING DEVICE Raymond T. Zwack, East Orange, N. J., assignor to Eclipse Aviation Corporation, East Orange, N. J., a corporation of New Jersey Application March 10, 1938, Serial No. 195,191

3 Claims. (01. 177-311) This invention relates to light directing means, gaged, there being a protruding thumb nut or and particularly to the art of illuminating a panel knob l8 to facilitate insertion and withdrawal. or wall section, by means of light from a source As shown socket I4 is supported on a spacer l5 disposed beneath, or within, the wall or panels which in turn rests upon part 26 to be further 5 outer surface. described. To provide a more resilient support 5 In certain installations of indicating instrua rubber or equally absorbent pad 2| is installed ments and the like, it is present day practice to in the depending skirt 22 of the socket i4, and employ electric lights or lamps having bases receives the shouldered portion 23 of the lamp which attach to a supporting surface in such base extension 24. Surrounding extension 24, manner as to cause the light emitting part of and in the plane of the beveled surface H of the 10 the device to be disposed wholly or partly becylinder 9, is a second translucent member 26, of neath, or within, the outer wall or surface of annular shape, and fitting snugly within the the supporting member or members. Such an lower end of cylinder 9, with its base resting on arrangement is shown, for example, in patent to the floor of the cup 5. For electrical current Kollsman No. 2,088,559, wherein the light is difeeding purposes, annular disc 26 may be aper- 1 rected along a channel parallel to the panel surtured as at 29, to register with aperture 3| of face. cup 5, there being also a second aperture 32 in It is an object of the present invention to dicup 5 for a similar purpose, that is, to receive the rect the light into a, circular path concentric with lead that passes to the positive side of the lamp the light source itself, thus providing a circular filament, preferably by way of extension 24, which band of light, of any desired color, to form a may be insulated from base l6, as taught by the ring around the light base on the surface of the above identified Kollsman patent. The conduit supporting wall or panel. containing this lead may enter by way of the Other objects of the invention will become space shown adjacent resistor 36, the latter beapparent from inspection of the following speciing supported by strap 31 and screws 8. The fication when read with reference to the accomresistor 36, of course, is not a part of the invenpanying drawing wherein is illustrated the pretion claimed herein. ferred embodiment of the invention. It is to be Due to the bevel I l, the light rays from source expressly understood, however, that the drawing I'I, after passing through translucent disc 26 is for the purpose of illustration only, and is (of the desired color) are deflected upwardly to not designed as a definition of the limits of the illuminate the outer surface 39 of cylinder 9, invention, reference being had to the appended thus forming an illuminated circular band sur claims for this purpose. rounding the knob l8, which will be sumciently In the drawing, striking in its effect to attract the attention of Fig. l is an enlarged vievTin longitudinal secthe p o to Whom Signal 0 Other intellition through a light directing device embodying gence is intended to be transmitted. To increase the present invention; the effectiveness, surface 39 may be serrated,

Fig. 2 is a view of a combined switch box and k l d, pebbled, or otherwise worked.

lamp housing having the device of Fig. 1 mountw t i himed 15;

ed therein; and 1. In a device of the class described, the com- 40 Fig. 3 is a view of the box of Fig. 2 as it apbination with a box having an apertured opaque De s When V ew d o g t n of wall, an opaque supporting cup secured to the 2451191718, with the Cover plate e inner surface of said apertured wall, said cup In Fi 1 referenc harac r 5 designates having a flat floor and a cylindrical inner wall supp n up s u ed t all 6 f box 1 F aligned with the aperture in said opaque wall, 2 a by Suitable Screws 3 11631 the foul a translucent plate resting on said floor, a trans- IleI'S 0f the Supporting D- The 1111161 Wall Of lucent cylinder interposed between Said plate and the cup i cy i to receive the cylinder 9 said inner cylindrical wall, said cylinder being of hi h y transpa last material. Such as beveled to deflect light rays in a direction parthat obtainable in the market under the trade 11 1 t t i of th cylinder, and away from name Lucite, orit may be any equivalent theret floor of th supporting cup, a lamp socket O P v h beveled lower d as Shown disposed within said cylinder, and supported upon at and Preferably having an Outer p to rest said first-named translucent plate, means en- UD 19118813 the metallic p Socket with gageable with said lamp socket to retain a light which the base It of lamp H is threadedly ensource in suspension therewithin, and means for W looking all of said elements against removal from the box by way of said apertured wall.

2. In a device of the class described, the combination with a box having an apertured opaque wall, an opaque supporting cup secured to the inner surface of said apertured wall, said cup having a floor and a cylindrical inner wall aligned with the aperture in said opaque wall, a translucent plate resting on said floor, a translucent cylinder interposed between said plate and said inner cylindrical wall, a lamp disposed within said cylinder, means engageable with said lamp socket to retain a light source in suspension therewithin, and means for locking all of said elements against removal from the box by way of said apertured wall.

socket to retain a light source in suspension therewithin, and means for locking all of said elements against removal by way of said apertured wall.

RAYMOND T. ZWACK. 

